GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

The following table sets forth the carrying value of goodwill and other intangible assets, net of accumulated amortization, at December 31:

	2021		2020
	(Dollars in thousands)
Balances not subject to amortization
Goodwill	$	985,072	$	506,206
Balances subject to amortization
Core deposit intangibles	27,053		22,215
Other intangible assets	5,719		892
Total other intangible assets	32,772		23,107
Total goodwill and other intangible assets	$	1,017,844	$	529,313

Schedule of Goodwill

The changes in the carrying value of goodwill for the periods indicated were as follows:

	2021		2020
	(Dollars in thousands)
Balance at beginning of year	$	506,206	$	506,206
Acquisitions	478,866		—
Balance at end of year	$	985,072	$	506,206

Schedule of Other Intangible Assets

The gross carrying amount and accumulated amortization of other intangible assets were as follows at the dates indicated:

	December 31
	2021						2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(Dollars in thousands)
Core deposit intangibles	$	48,920	$	(21,867)	$	27,053	$	38,620	$	(16,405)	$	22,215
Other intangible assets	6,390		(671)		5,719		2,434		(1,542)		892
Total	$	55,310	$	(22,538)	$	32,772	$	41,054	$	(17,947)	$	23,107

Schedule of Intangible Assets Estimated Annual Amortization Expense

The following table sets forth the estimated annual amortization expense of intangible assets for each of the next five years:

Year	Amount
	(Dollars in thousands)
2022	$	7,662
2023	$	6,884
2024	$	5,911
2025	$	4,720
2026	$	2,824